TY - JOUR AU - May, Willie AU - Benner, Bruce AU - Wise, Stephen AU - Schuetzle, D. AU - Lewtas, J C2 - Mutation Research DA - 1992-03-01 LA - en M1 - 276 PB - Mutation Research PY - 1992 TI - Standard Reference Materials for Chemical and Biological Studies of Complex Environmental Samples ER -